Is this to be used just one time? Because otherwise we will need to improve a lot of screens to make sure you can find which account is which in the app. We usually hide most of the key..
Temporary usage. Let's say for a a few days. No need to immediatly revamp the UI. Having 2-3 accounts is fine. The robot and background color is enough to differentiate a few accounts. Only change would be adding text saying that the display name is optional and allowing the user to continue